APW7108
Electrical Characteristics (Cont.)
Refer to the typical application circuits. These specifications apply over VCC=5V, VIN=5~24V and TA= -40 ~ 85 °C, unless otherwise
specified. Typical values are at TA=25°C.
APW7108
Symbol
Parameter
Test Conditions
Unit
Min.
Typ.
Max.
REFERENCE VOLTAGE
-
0.9
-
VREF
Reference Voltage
Accuracy
-1.0
-0.1
-1.0
-
-
-
+1.0
+0.1
+1.0
%
%
%
Line Regulation
Load Regulation
VCC = 4.5V to 5.5V, VIN = 5~24V
0A < IOUT < 5A; 5V < VIN < 24V
PWM CONVERTERS
IVSEN
VSEN Pin Bias Current
-100
-
-
+100
nA
ns
kW
%
Minimum off-time of UGATE
VOUT Pin Input Impedance
VSEN Under-Voltage Threshold
VSEN Over-Voltage Threshold
550
134
70
-
-
VOUT = 5V
-
VUV
VOV
65
110
75
120
~ 2ms noise filter, VSEN Falling
~ 2ms noise filter, VSEN Rising
115
%
SWITCHING FREQUENCY
PWM1
DC output current
PWM2
294
217
345
255
396
293
Switching Frequency in PWM
FSW
kHz
mode
MOSFET GATE DRIVERS
UGATE Source Resistance
VBOOT = 5V, IUGATE = 0.1A
VBOOT = 5V, IUGATE = 0.1A
VCC = 5V, ILGATE= 0.1A
VCC = 5V, ILGATE= 0.1A
-
-
-
-
-
1
2
1.8
2
W
W
W
W
ns
UGATE Sink Resistance
LGATE Source Resistance
LGATE Sink Resistance
Dead-Time
0.9
1
0.6
25
1.2
-
TD
PGOOD AND CONTROL FUNCTIONS
POK is high：~ 3ms noise filter, VSEN is
from low to target value
87
92
95
%
PGOOD Threshold
POK is high：~ 3ms noise filter, VSEN is
107
112
117
%
from high to target value
POK Hysteresys
-
-
-
-
3
-
-
1
%
PG1, PG2 Leakage Current
VPG1,2 = 5.5V
IPG1,2 = -4mA
By Design
mA
V
VPG1, 2
ISEN
PG1, PG2 Voltage Low
ISEN Sourcing Current
0.5
-
1
260
mA
Continuous-Conduction-Mode
(CCM) Enforced (PFM Operation VOUTx pulled low
Inhibited)
-
-
-
0.1
-
V
V
Automatic CCM/PFM Operation
VOUTx connected to the output
0.9
Enabled
SOFT-START, SOFT-STOP, AND ENABLE
ISTART
ISTOP
Soft-Start Current Source
Soft-Stop Current Sink
Sourcing current
Sinking current
-
4.5
2.2
2
-
mA
mA
kW
V
-
-
SOFTx Pull-Low Impedance
Soft-Start Complete Threshold
Soft-Start Clamp Voltage
EN Voltage Low (OFF)
-
-
VST
-
-
1.5
2.4
-
-
-
Voltage Threshold of SOFT Pin
V
-
0.8
-
V
EN Voltage High (ON)
2.0
-
V
Copyright ã ANPEC Electronics Corp.
4
www.anpec.com.tw
Rev. A.4 - Jan., 2009
ANPEC [ ANPEC ELECTRONICS COROPRATION ]
